CN101133640A - Method and apparatus for controlling a video surveillance display - Google Patents

Method and apparatus for controlling a video surveillance display Download PDF

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Publication number
CN101133640A
CN101133640A CN 200580042457 CN200580042457A CN101133640A CN 101133640 A CN101133640 A CN 101133640A CN 200580042457 CN200580042457 CN 200580042457 CN 200580042457 A CN200580042457 A CN 200580042457A CN 101133640 A CN101133640 A CN 101133640A
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China
Prior art keywords
video
frame
input buffer
mpeg
video data
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Pending
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CN 200580042457
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Chinese (zh)
Inventor
格雷格·马克斯·米勒
塞缪尔·尼古拉·格里戈里安
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Pelco Inc
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Pelco Inc
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Application filed by Pelco Inc filed Critical Pelco Inc
Priority to CN201610884137.7A priority Critical patent/CN107103716A/en
Publication of CN101133640A publication Critical patent/CN101133640A/en
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    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
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    • G—PHYSICS
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    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
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    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
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    • H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Library & Information Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Television Signal Processing For Recording (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

A method and apparatus for controlling a video surveillance display comprising receiving an MPEG video stream comprising video data in I-frames and P-frames, storing the MPEG video stream in an input buffer, displaying the stored MPEG video stream in full-motion video, monitoring the amount of video data stored in the input buffer; and displaying only the I-frames of the stored MPEG video stream when the amount of video data stored in the input buffer is greater than a predetermined amount.

Description

Be used for control of video and monitor the method and apparatus that shows
Background of invention
Present invention relates in general to surveillance, particularly relate to and be used for the method and apparatus that control of video monitors demonstration.
The video data that demonstration is collected by video monitoring system is owing to relate to lot of data thereby be a difficult problem.If video data is compressed, as use the MPEG video, system must at first decompress or decoded video before video can be shown.Decompressing needs a large amount of system resources and time.For showing the video flowing of a plurality of compressions, system must can handle a plurality of decompressions.According to the resolution of the quantity of the video flowing that will be shown simultaneously, each video flowing, and the frame per second of the video flowing of each demonstration of system user request, system resource is very fast can be exceeded.Full-motion video provides most information and is many users' first-selection.Yet it is very big to show that a plurality of full-motion videos flow the amount of needed system resource, thereby further increases the weight of the burden of system resource.Image such as jpeg picture for interior frame coding, each image is independently, if thereby system is just showing a series of jpeg pictures and is finding that it can not processed frame speed that then system shows images every an image or per three or four images simply according to the current restriction of system resource.For the MPEG video, must be able to decode all videos stream of system.If system falls behind, can not be by as the video flowing of interior frame coding, showing and the deletion data every an image simply.Therefore, system finishes more than processed video data with the video data that enters, and this can cause system crash.In addition, for example, the temporary transient overload of system can be derived from the system processing power that data burst that network traffics cause or built-in system process or user's request cause and interrupt.If system resource is stretched over maximum, these temporary transient overloads bother the utmost point.Obviously being reduced in the video monitor environment of system crash or service level is unacceptable, because it requires operation continuously and maximum possible amount of information.
Thereby, needing a kind of like this video monitoring system in the video monitor industry, it makes shown amount of video information maximization, makes the minimum of interruptionization of shown video simultaneously.
Summary of the invention
According to the present invention, provide a kind of control of video to monitor the method that shows, comprise step: receive the mpeg video stream that comprises I frame and P frame video data; The mpeg video stream that is received is kept in the input buffer; Show the mpeg video stream of being preserved with the full-motion video pattern; Supervision is kept at the video data volume in the input buffer; And only show the I frame of the mpeg video stream of being preserved during greater than scheduled volume when the video data volume of preserving in the input buffer.
According to the present invention, also provide a kind of control of video to monitor the method that shows, comprise step: receive a plurality of mpeg video streams that comprise I frame and P frame video data; Reception is about the request with the pattern that is shown of the mpeg video stream that received, and at least one mpeg video stream of asking will show with the full-motion video pattern; According to the mpeg video stream in the request demonstration input buffer that is received; Monitor the video data volume in the input buffer; Determine can the full-motion video pattern to show and the video data volume of not causing preserving in the input buffer exceeds the quantity of the mpeg video stream of scheduled volume; Reach the mpeg video stream that only is presented at quantification in the determining step with the full-motion video pattern, all the other mpeg video streams show with the I frame pattern.
In another aspect of this invention, provide a kind of control of video to monitor the method that shows, comprised step: receive a plurality of mpeg video streams that comprise I frame and P frame; Receive input, the quantity of the video flowing that its request will show simultaneously and the screen number that will show with the full-motion video pattern on display screen; Determine the quantity of the video flowing that can the full-motion video pattern shows, all the other video flowings of asking show with the I frame pattern; And with full-motion video pattern display part branch request number of video stream, all the other show with the I frame pattern.
In another aspect of this invention, provide a kind of method of control of video surveillance, comprised step: sent the video data that comprises from the full-motion video of video source; At a position receiving video data; The video data that is received is kept in the input buffer; The video data of being preserved is shown as full-motion video; When the video data volume of determining to preserve in the input buffer is greater than predeterminated level; Time notice video source only sends the I frame greater than predeterminated level when the video data volume of preserving in the input buffer; At the video source place I frame is separated from the MPEG video data; Send the video data of only forming by the I frame; Receive the video data of only forming by the I frame from video source; The video data of only being made up of the I frame is kept in the video buffer; And demonstration is kept at the I frame in the video buffer.
Another aspect of the present invention provides a kind of method of control of video surveillance, comprises step: send the video data that comprises from the full-motion video of video source; At a position receiving video data; The video data that is received is kept in the input buffer; The video data of being preserved is shown as full-motion video; Determine that whether video data is stored in speed in the input buffer less than predeterminated level; The notice video source only sends the I frame when video data is stored in speed in the input buffer less than predeterminated level; At the video source place I frame is separated from the MPEG video data; Send the video data of only forming by the I frame; Receive the video data of only forming by the I frame from video source; The video data of only being made up of the I frame is kept in the video buffer; And demonstration is kept at the I frame in the video buffer.
Another aspect of the present invention is provided for control of video and monitors device shown, comprising: the input equipment that is used to receive the mpeg video stream that comprises I frame and P frame video data; Be used to preserve the input buffer of the mpeg video stream that is received; And the processor of the video data volume that is used for monitoring that input buffer is preserved.If the video data volume of preserving in the input buffer is less than scheduled volume, processor is provided for showing with the full-motion video pattern signal of the mpeg video stream of being preserved; If the video data volume of preserving in the input buffer is greater than scheduled volume, then processor is provided for only showing the signal of the I frame of the mpeg video stream of being preserved.
Another aspect of the present invention provides a kind of control of video to monitor device shown, comprising: the input equipment that is used to receive a plurality of mpeg video streams that comprise I frame and P frame video data; Be used to receive about the mpeg video stream that the received input equipment with the request of the pattern that is shown, at least one mpeg video stream of asking will show with the full-motion video pattern; Be used to preserve the input buffer of the mpeg video stream that is received; And be used for being provided for showing the Signal Processing device of the mpeg video stream of input buffer according to the request that is received.The video data volume in the processor monitors input buffer is also determined can the full-motion video pattern to show and the video data volume of not causing preserving in the input buffer exceeds the quantity of the mpeg video stream of scheduled volume.Thereby processor changes signal only shows institute's quantification with the full-motion video pattern mpeg video stream, and all the other mpeg video streams show with the I frame pattern.
In addition,, provide a kind of control of video to monitor device shown, having comprised: the input equipment that is used to receive a plurality of mpeg video streams that comprise I frame and P frame according to the present invention; The input equipment of the request of the screen number that is used to receive the quantity of the video flowing that request will show simultaneously and will shows with the full-motion video pattern on display screen; Be used for determining the processor of the quantity of the video flowing that can the full-motion video pattern shows, all the other video flowings of asking show with the I frame pattern.Processor is provided for full-motion video pattern display part branch request number of video stream and all the other signals that show with the I frame pattern.
In addition, the invention provides video monitoring system, comprise network; Be connected to the video source that is used to provide the mpeg video stream that comprises I frame and P frame of network, video source can be divided into video flowing I frame and P frame; And be connected to network and comprise the work station of the input buffer that is used to preserve the video data that receives from network and processor.Work station monitors the video data volume in the input buffer and sends a signal to video source only provides the I frame during greater than scheduled volume with the video data volume in input buffer.
The present invention also provides video monitoring system, comprises network; Be connected to the video source that is used to provide the mpeg video stream that comprises I frame and P frame of network, video source can be divided into video flowing I frame and P frame; And be connected to network and comprise the work station of the input buffer that is used to preserve the video data that receives from network and processor.Work station monitoring video data just are being stored in the speed in the input buffer and are sending a signal to video source only provides the I frame when just being stored in speed in the input buffer less than scheduled volume at video data.
Other advantage of the present invention and application can obviously be found out by following detailed description to the preferred embodiments of the present invention.
Description of drawings
Fig. 1 is for using the block diagram of video monitoring system of the present invention.
Fig. 2 is the block diagram in the exemplary video source in the video monitoring system shown in Fig. 1.
Fig. 3 is the block diagram at the exemplary operation station in the video monitoring system shown in Fig. 1.
Fig. 4 is for illustrating exemplary display figure.
Fig. 5 illustrates the block diagram of handling mpeg stream according to the present invention.
Fig. 6 is the flow chart of an embodiment of the inventive method.
Fig. 7 is the flow chart of an embodiment of the inventive method.
Fig. 8 is the flow chart of an embodiment of the inventive method.
Fig. 9 is the flow chart of an embodiment of the inventive method.
Embodiment
With reference to figure 1, video monitoring system 10 has network 12, and it can be closed network, local area network (LAN) or wide area network such as internet.A plurality of video source 14,16,18 and 20, for example it can be video frequency camera or digital camera, is connected to network 12 to provide in real time or the playback mpeg video stream, as the MPEG4 video flowing.Work station 22, for example it can be control point, personal computer in the surveillance 10 or the user who logins surveillance 10 by means of laptop computer, is connected to network 12. Video source 14,16,18 and 20 provides mpeg video stream to work station 22 through network 12.
Exemplary video source illustrates with the block diagram form among Fig. 2.Gamma camera 24 offers encoder 26 with its output, encoder 26 provide then mpeg video stream to modulator-demodulator 28 to pass to network 12.Be illustrated as independent equipment although it should be understood that gamma camera 24, encoder 26 and modulator-demodulator 28, their function can provide in single equipment or two equipment rather than three equipment that separate as shown in the figure.
With reference to figure 3, exemplary operation of the present invention station illustrates with the block diagram form.Work station 22 has processor 30, and it is connected to input buffer 32, ROM34, RAM36, display 38, disc driver 40 and user input device 42.Processor 22 can be CPU or digital signal processor or the combination of the two.User input device 32 can be controller, keyboard or other suitable input equipment.Processor 22 is imported in response to the user from user input device 42 and is implemented to be kept at algorithm and the program in ROM34 or the disc driver 40 and to provide to output signal to display 38.Modulator-demodulator 44 is connected to network 12 and the video source from Fig. 1 14,16,18 and 20 receives mpeg video stream.Modulator-demodulator 44 provides mpeg video stream to input buffer 32.According to the inventive method, video stream data can be stored in the subregion of disc driver 40.Input port 45, for example it can be USB or FireWire port port, also can provide video flowing to input buffer 32.Perhaps, processor 30 can have its oneself input buffer, or the part of RAM36 can be used as input buffer.In addition, disc driver 40 can be a video source as described herein.
User input device 42 provides the user to input to processor 30, as about the resolution of each part of the instruction of the quantity of the video flowing that will on display 38, show, display, and video flowing will still be another form demonstration with the full-motion video pattern.Fig. 4 shows the exemplary demonstration on the screen of display 38, and it has four quadrants that separate, and is labeled as 46,48,50 and 52 respectively, and for example it can comprise respectively the video flowing from video source 14,16,18 and 20.Be understood that, according to user's needs and system capability, many other display structures also are possible, for example screen are divided into the frame of 9 or 16 equal sizes, and the frame that perhaps quadrant 46 is divided into 4 equal sizes remains its original size with quadrant 48,50 and 52 simultaneously.
Fig. 5 shows the exemplary mpeg stream 54 from video source 14,16,18 and 20.Mpeg stream 54 is made up of a series of Frame code patterns.Three types of Frame is I frame, P frame and B frame.The I frame is encoded as single image, and is not in relation to any past or frame in the future.P frame (indication) is encoded with respect to the reference frame in past, and described reference frame can be P frame or I frame.The reference frame in past is nearest at preceding reference frame.B frame (two-way indication) is encoded with respect to the reference frame in past, following reference frame or the two.Following reference frame is nearest reference frame subsequently, or I frame or P frame.Frame sequence, it is called as figure group (GOP) in the art, can take many different structures, and as mentioned above, mpeg video stream 54 only is an example.The ratio of I frame, P frame and B frame is determined by the character of video flowing and the bandwidth constraint of network and system.In addition, the time of encoded video streams needs also can influence ratio.Although only the mpeg stream of being made up of I frame and P frame has been found and can be used for video monitoring system satisfactorily, mpeg video stream 54 is shown having the B frame.
Mpeg video stream 54 is separated into two independent files by the processor 30 of work station 22, file 56 and file 58.Perhaps, other circuit can be used as the video flowing separator.Processor 30 is determined frame type by checking the frame stem.File 56 only comprises the I frame, and file 58 comprises P frame and B frame.As mentioned above, mpeg stream 54 can not comprise the B frame, thereby file 58 also can only comprise the P frame.In the file 56 and 58 each has unique identifier, and it can and can be unique timestamp that processor 30 provides in the stem of file separately.Processor 30 also provides continuous frame number (being shown 1-10 in Fig. 5) to each frame, makes that file 56 and 58 can be by processor 30 in conjunction with providing full-motion video with the request in response to user input device 42.The I frame is the independent image that is similar to jpeg picture.Therefore, if system can not handle full-motion video, then have only the I frame to be shown, its frame frequency is based on the accessible frame frequency of current system requirements, for example, and up to the frame rate of 30 frame per seconds.
Fig. 6 is the flow chart that the inventive method first embodiment is shown.In step 60, processor 30 shows request from user input device 42 receiver, videos, and it indicates the screen display that the user needs.In step 62, processor 30 determines whether the video flowing quantity of user's request can the full-motion video pattern show.If user's request can be provided, then processor 30 provides the demonstration of being asked in step 64 with the full-motion video pattern.If user's request can not be provided, then determine the maximum quantity (V of the video flowing that can the full-motion video pattern shows at step 66 processor 30 Max), all the other video flowings show with the I frame pattern.In step 68, processor 30 is combined into the frame that shows with the full-motion video pattern with I and P frame.Afterwards, processor 30 provides V MaxThe full-motion video of stream and the I frame pattern of all the other video flowings stream.
Figure 7 illustrates another embodiment of the inventive method.In this embodiment, in step 72, processor 30 monitors the amount (V of the video data of preserving in the input buffer 32 D); In step 74 the video data volume and the predeterminated level of being preserved compared.Predeterminated level preferably is selected as making the accident request that has enough memory capacity to be used to hold to come the data burst of automatic network 12 in the input buffer 32 or cause from the user's or because of system handles.Processor 12 determines by fill level and the definite deal with data resource needed of checking input buffer 32 whether it falls behind aspect the video flowing of handling input.If processor 30 determines that it falls behind, then temporarily some or all video flowings are switched to the I frame pattern at step 76 processor 30, can handle up to system resource till the video flowing of input.In step 78, processor 30 is determined V DWhether be lower than predeterminated level.When system resource can be handled the video flowing of input, processor 30 will show and switch back original structure, shown in step 80.Step 74 with 78 in the predeterminated level of indication can be identical, perhaps can be different setting up a scope, till video flowing continues to show that with the I frame pattern the video data volume of preserving is lower than the reduced levels of described scope in input buffer 32.Work station 22 uses look-up table to determine and can show the needed disposal ability of each video flowing with the resolution and the frame frequency of being asked.Preferably, look-up table was created before using work station 22, although following calculating also can be carried out in real time.For example, look-up table can be stored in and carry out permanent storage in the disc driver 40 and copy to RAM36 at normal operation period.Processor use amount at each resolution and frame frequency is determined and is kept in the look-up table, thereby system can be effectively and determines apace whether the demonstration of being asked can be provided or whether some or all quadrant must be in the I frame pattern, for example uses, adds these and require to determine total processor instructions for use, and this and predeterminated level that the processor that allows uses to be compared by searching the needed processor of demonstration in each quadrant.Have been found that use the look-up table computation processor use usually actual measured value positive and negative 5% in.In addition, have difference although have been found that the video flowing of gamma camera, for example when gamma camera is watched blank wall and watched the group, use calculating according to processor, difference is not very big.Perhaps, can determine in real time by processor 30 in the processor use amount of each resolution and frame frequency, rather than be kept in the look-up table.
In another aspect of the present invention shown in Figure 8, work station 22 can communication on the network 12 and when the processor 30 of work station 22 has determined that input buffer 32 is filled into level greater than predeterminated level request video source such as video source 14 only send the I frame, describedly determine to carry out in aforesaid step 72 and 74.When the level of input buffer 32 during greater than predetermined value, processor 30 notice video source are 82 indicated only transmission I frames set by step only.This predeterminated level is selected to guarantee that system can not collapse, as mentioned above.In this case, the encoder 26 that is connected to gamma camera 24 is (a) I frame and (b) P frame and B frame or have only the P frame as mentioned above with the MPEG4 decoding video stream.Afterwards, encoder 26 only sends the I frame to work station 22 on network 12, thereby makes the current capabilities match of video output streams and work station 22.In step 84, processor 30 continues to monitor the data level of preserving in the input buffer 32.When processor 30 can show complete moving MPEG4 video once more on display 38, processor 30 sent message or signal to encoder 26 on network 12, and it indicates this encoder 26 should send the MPEG4 video flowing now, rather than the indicated I frame of step 86.
In another aspect of the present invention shown in Figure 9, work station 22 can and have been determined to occur on the network 12 congested as asking video source such as video source 14 only to send the I frame when the speed that is input to input buffer 32 is lower than set rate in communication on the network 12 at the processor 30 of work station 22.In step 88, processor 30 monitoring video data just are being stored in the speed (V in the input buffer 32 R).In decision point 90, processor 30 is determined V RWhether be lower than set rate.If V RBe lower than set rate, then only send the I frame in step 92 processor 30 notice video source such as video source 14.In this case, the encoder 26 that is connected to gamma camera 24 is (a) I frame and (b) P frame and B frame or have only the P frame as mentioned above with the MPEG4 decoding video stream.Afterwards, encoder 26 only sends the I frame to work station 22 on network 12, thereby reduces needed bandwidth on the network 12.In decision point 94, processor 30 is determined V RWhether greater than set rate, if processor 30 sends full-motion video in step 96 notice video source.Step 90 with 94 in the predeterminated level of indication can be identical, perhaps can be different setting up a scope, video flowing continues to show till video data is stored in the higher level of speed greater than described scope in the input buffer 32 with the I frame pattern.
Should be appreciated that and to make changes and modifications and not depart from the scope of the present invention the present invention.Should also be understood that scope of the present invention should not be construed as is limited to specific embodiment disclosed herein, but only according to the claims of reading according to aforementioned disclosure.

Claims (41)

1. control of video monitors the method that shows, comprises step: receive the mpeg video stream that comprises I frame and P frame video data; The mpeg video stream that is received is kept in the input buffer; Show the mpeg video stream of being preserved with the full-motion video pattern; Supervision is kept at the video data volume in the input buffer; And only show the I frame of the mpeg video stream of being preserved during greater than scheduled volume when the video data volume of preserving in the input buffer.
2. according to the method for claim 1, also comprise step: will only show that when the video data volume of preserving in the input buffer is lower than scheduled volume the I frame changes into the demonstration full-motion video.
3. according to the method for claim 1, also comprise step: in the mpeg video stream of being preserved, the I frame is separated with the P frame and I frame and the P frame that separates is kept in the storage device separately.
4. according to the method for claim 1, also comprise step: the video source of signal to mpeg video stream is provided, and the video data that preserve in input buffer in its instruction video source only provides the I frame of mpeg video stream during greater than scheduled volume.
5. according to the method for claim 4, also comprise step: I frame and P frame that mpeg video stream is provided when providing signal to be lower than scheduled volume to the video source of mpeg video stream with the video data of preserving in input buffer.
6. control of video monitors the method that shows, comprises step: receive a plurality of mpeg video streams that comprise I frame and P frame video data; Reception is about the request with the pattern that is shown of the mpeg video stream that received, and at least one mpeg video stream of asking will show with the full-motion video pattern; According to the mpeg video stream in the request demonstration input buffer that is received; Monitor the video data volume in the input buffer; Determine can the full-motion video pattern to show and the video data volume of not causing preserving in the input buffer exceeds the quantity of the mpeg video stream of scheduled volume; Reach the mpeg video stream that only is presented at quantification in the determining step with the full-motion video pattern, all the other mpeg video streams show with the I frame pattern.
7. according to the method for claim 6, also comprise step: when the video data volume of preserving in the input buffer is lower than scheduled volume, change back the request that is received with demonstration.
8. according to the method for claim 6, also comprise step: in the mpeg video stream that is received, the I frame is separated with the P frame and I frame and the P frame that separates is kept in the storage device separately.
9. according to the method for claim 6, wherein said determining step comprises that the visit look-up table is to determine the needed amount of display of video streams.
10. according to the method for claim 6, wherein said determining step comprises the needed amount of real-time calculating display of video streams.
11. according to the method for claim 6, also comprise step: the video source of signal to mpeg video stream is provided, and the video data that preserve in input buffer in its instruction video source only provides the I frame of mpeg video stream during greater than scheduled volume.
12., also comprise step: I frame and P frame that mpeg video stream is provided when providing signal to be lower than scheduled volume to the video source of mpeg video stream with the video data of preserving in input buffer according to the method for claim 11.
13. control of video monitors the method that shows, comprises step: receive a plurality of mpeg video streams that comprise I frame and P frame; Receive input, the quantity of the video flowing that its request will show simultaneously and the screen number that will show with the full-motion video pattern on display screen; Determine the quantity of the video flowing that can the full-motion video pattern shows, all the other video flowings of asking show with the I frame pattern; And with full-motion video pattern display part branch request number of video stream, all the other show with the I frame pattern.
14. according to the method for claim 13, wherein said step display comprises: full-motion video stream and all the other video flowings of showing maximum quantity show with the I frame pattern.
15., also comprise step: to can not the remainder of I frame with mpeg video stream being separated with the mpeg video stream of being asked of full-motion video pattern demonstration according to the method for claim 14.
16. according to the method for claim 15, wherein said determining step comprises: the visit look-up table is to determine the needed amount of display of video streams.
17. method according to claim 16, wherein said receiving step comprises the request of the resolution of the video flowing that the reception request will be shown, and described determining step comprises that the visit look-up table is to determine the needed amount of resolution display of video streams to be asked.
18. according to the method for claim 16, wherein said determining step comprises the needed amount of real-time calculating display of video streams.
19., comprise that also request only sends the I frame of mpeg video stream with the video source of the video flowing of I frame pattern demonstration according to the method for claim 13.
20. the method for control of video surveillance comprises step: send the video data that comprises from the full-motion video of video source; At a position receiving video data; The video data that is received is kept in the input buffer; The video data of being preserved is shown as full-motion video; When the video data volume of determining to preserve in the input buffer is greater than predeterminated level; Time notice video source only sends the I frame greater than predeterminated level when the video data volume of preserving in the input buffer; At the video source place I frame is separated from the MPEG video data; Send the video data of only forming by the I frame; Receive the video data of only forming by the I frame from video source; The video data of only being made up of the I frame is kept in the video buffer; And demonstration is kept at the I frame in the video buffer.
21., also comprise step according to the method for claim 20: determine when the video data volume of preserving in the input buffer is lower than predeterminated level and the video data volume of in input buffer, preserving when being lower than predeterminated level the notice video source send the video data that comprises full-motion video.
22. the method for control of video surveillance comprises step: send the video data that comprises from the full-motion video of video source; At a position receiving video data; The video data that is received is kept in the input buffer; The video data of being preserved is shown as full-motion video; Determine that whether video data is stored in speed in the input buffer less than predeterminated level; The notice video source only sends the I frame when video data is stored in speed in the input buffer less than predeterminated level; At the video source place I frame is separated from the MPEG video data; Send the video data of only forming by the I frame; Receive the video data of only forming by the I frame from video source; The video data of only being made up of the I frame is kept in the video buffer; And demonstration is kept at the I frame in the video buffer.
23., also comprise step according to the method for claim 22: determine video data be stored in the input buffer speed when greater than predeterminated level and when video data is stored in speed in the input buffer greater than predeterminated level the notice video source send the video data that comprises full-motion video.
Monitor device shown 24. be used for control of video, comprising: the input equipment that is used to receive the mpeg video stream that comprises I frame and P frame video data; Be used to preserve the input buffer of the mpeg video stream that is received; And the processor of the video data volume that is used for monitoring that described input buffer is preserved; If the video data volume of preserving in the described input buffer is less than scheduled volume, processor is provided for showing with the full-motion video pattern signal of the mpeg video stream of being preserved; If the video data volume of preserving in the described input buffer is greater than scheduled volume, then processor is provided for only showing the signal of the I frame of the mpeg video stream of being preserved.
25. according to the device of claim 24, wherein described processor will only show that the signal change of I frame is for showing the signal of full-motion video when the video data volume of preserving in the described input buffer is lower than scheduled volume.
26. according to the device of claim 24, wherein said processor separates the I frame in the mpeg video stream that is received and I frame and the P frame that separates is kept at separately in the described input buffer with the P frame.
27. according to the device of claim 24, wherein said processor provides the video source of signal to mpeg video stream, the video data that preserve in described input buffer in its instruction video source only provides the I frame of mpeg video stream during greater than scheduled volume.
28. according to the device of claim 27, the I frame and the P frame of mpeg video stream is provided when providing signal to be lower than scheduled volume to the video source of mpeg video stream with the video data of preserving in described input buffer wherein said processor.
29. control of video monitors device shown, comprising: the input equipment that is used to receive a plurality of mpeg video streams that comprise I frame and P frame video data; Be used to receive about the mpeg video stream that the received input equipment with the request of the pattern that is shown, at least one mpeg video stream of asking will show with the full-motion video pattern; Be used to preserve the input buffer of the mpeg video stream that is received; And be used for being provided for showing the Signal Processing device of the mpeg video stream of input buffer according to the request that is received, the video data volume in the described processor monitors input buffer is also determined can the full-motion video pattern to show and the video data volume of not causing preserving in the input buffer exceeds the quantity of the mpeg video stream of scheduled volume, change described signal only shows institute's quantification with the full-motion video pattern mpeg video stream thereby reach described processor, all the other mpeg video streams show with the I frame pattern.
30., change back the request that demonstration receives with described signal when the video data volume that wherein said processor is preserved is lower than described scheduled volume in described input buffer according to the device of claim 29.
31. according to the device of claim 29, also comprise storage device, and wherein said processor separates the I frame in the mpeg video stream that is received and I frame and the P frame that separates is kept at separately in the described storage device with the P frame.
32. according to the device of claim 29, wherein said processor access look-up table is to determine the needed amount of display of video streams.
33. according to the device of claim 29, wherein said processor provides and will be sent to the signal of the video source of mpeg video stream, the video data that preserve in described input buffer in its instruction video source only provides the I frame of mpeg video stream during greater than scheduled volume.
34. according to the device of claim 29, the I frame and the P frame of mpeg video stream is provided when providing the signal that will be sent to the video source of mpeg video stream to be lower than scheduled volume with the video data of preserving in described input buffer wherein said processor.
35. control of video monitors device shown, comprising: the input equipment that is used to receive a plurality of mpeg video streams that comprise I frame and P frame; The input equipment of the request of the screen number that is used to receive the quantity of the video flowing that request will show simultaneously and will shows with the full-motion video pattern on display screen; Be used for determining the processor of the quantity of the video flowing that can the full-motion video pattern shows, all the other video flowings of asking show that with the I frame pattern described processor also is provided for full-motion video pattern display part branch request number of video stream and all the other signals that show with the I frame pattern.
36. according to the device of claim 35, wherein for the mpeg video stream of being asked that can not show with the full-motion video pattern, described processor separates the remainder of I frame with mpeg video stream.
37. according to the device of claim 35, wherein said processor access look-up table is to determine the needed amount of display of video streams.
38. video monitoring system comprises: network; Be connected to the video source that is used to provide the mpeg video stream that comprises I frame and P frame of described network, described video source can be divided into video flowing I frame and P frame; And be connected to described network and comprise the work station of the input buffer that is used to preserve the video data that receives from network and processor, wherein said work station monitors the video data volume in the described input buffer and sends a signal to described video source only provides the I frame during greater than scheduled volume with the video data volume in described input buffer.
39. according to the video monitoring system of claim 38, wherein said work station sends the mpeg video stream that comprises I frame and P frame when sending a signal to described video source being lower than scheduled volume with the video data volume of preserving in described input buffer.
40. video monitoring system comprises: network; Be connected to the video source that is used to provide the mpeg video stream that comprises I frame and P frame of network, described video source can be divided into video flowing I frame and P frame; And be connected to described network and comprise the work station of the input buffer that is used to preserve the video data that receives from network and processor, wherein work station monitoring video data just are being stored in the speed in the described input buffer and are sending a signal to described video source only provides the I frame when just being stored in speed in the described input buffer less than scheduled volume at video data.
41. according to the video monitoring system of claim 40, wherein said work station sends a signal to described video source and sends the mpeg video stream that comprises I frame and P frame when being stored in speed in the described input buffer greater than scheduled volume at video data.
CN 200580042457 2004-11-12 2005-11-08 Method and apparatus for controlling a video surveillance display Pending CN101133640A (en)

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EP1825672B1 (en) 2013-05-01
MX2007005737A (en) 2007-07-13
EP1825672A4 (en) 2010-09-15
CN107103716A (en) 2017-08-29

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